Connects to Eko software to visualize and share heart sound waveforms smart device not included. Up to 40x amplification at peak frequency, vs. analog mode. Active noise cancellation reduces unwanted background sounds. Toggle between analog and amplified listening modes. Soft-sealing ear tips provide an excellent acoustic seal and comfortable fit Tunable, dual-sided stainless steel chestpiece with open or closed bell.

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Seeley's Essentials of Anatomy and Physiology 11th edition.

Used Book in Good Condition.